ext4: fix build failure without procfs

fs/ext4/super.c: In function 'ext4_fill_super':
fs/ext4/super.c:2226: error: 'ext4_ui_proc_fops' undeclared (first use
in this function)
fs/ext4/super.c:2226: error: (Each undeclared identifier is reported
only once
fs/ext4/super.c:2226: error: for each function it appears in.)

Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 014677b8e224..fb940c22ab0d 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -2231,6 +2231,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
                 goto failed_mount;
         }
 
+#ifdef CONFIG_PROC_FS
         if (ext4_proc_root)
                 sbi->s_proc = proc_mkdir(sb->s_id, ext4_proc_root);
 
@@ -2238,6 +2239,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
                 proc_create_data("inode_readahead_blks", 0644, sbi->s_proc,
                                  &ext4_ui_proc_fops,
                                  &sbi->s_inode_readahead_blks);
+#endif
 
         bgl_lock_init(&sbi->s_blockgroup_lock);